Merge pull request #74 from unidoc/us-1333-removes-imaging-lib

[US-1333] Remove imaging library dependency and update to stdlib image processing

Merge pull request #61 from unidoc/us-924-remove-perpetual

[US-924] Remove Term Perpetual

Sync with development (#55)

* update readme.md, add ci validate examples

* Fix validate examples (#54)

* fix validate-example.sh

* rename ci title

* add ci build-examples.sh

* update ci.yml path

* update path for run main.go

* update path

* update examples

* update validate-examples.sh

* update

* update usage-logs docx

* add go mod tidy

* remove node-remove example

* remove document comment example

* remove mutiple chart from csv

* remove line chart from csv example

* remove comment-remove example

* remove comment-list example

* remove copy reorder slide

* fix examples

* add variable for commentId on comment-remove example

* add presentation use template sales example

Added different watermark text settings. (#50)

Merge pull request #42 from sampila/add-node-remove

[US-718] add node remove example and update unioffice version

Merge pull request #34 from anovik/toc

[US-503] Custom Table of Contents example

Merge pull request #23 from unidoc/rc-v1.20.0

Prepare Release Rc v1.20.0

prepare v1.19.0 examples (#20)

Update examples for v1.17.0 (#19)

Updated examples for unioffice v1.16.0 (#18)